<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="./lib/vue.js"></script>
    <link rel="stylesheet" href="./lib/bootstrap.min.css">
</head>
<body>
    <!-- 待改！！！！！！！ -->
    <div id="app">
        <cmt-box @func="loadComments"></cmt-box>
        <ul class="list-group">
            <li class="list-group-item" v-for="item in list" :key="item.id">
                <span class="badge">评论人：{{ item.user }}</span>
                {{ item.content }}
            </li>
        </ul>
        
    </div>
    <template id="tmp1">
        <div>
            <div class="form-group">
                <label for="">评论人：</label>
                <input type="text" class="form-control" v-model="user">
            </div>
            <div class="form-group">
                <label for="">评论内容：</label>
                <textarea class="form-control" v-model="content"></textarea>  
            </div>
            <div class="form-group">
                <input type="button" value="发表评论" class="btn btn-primary" @click="postComment">
            </div>
        </div>
    </template>
    <script>
        var commentBox = {
            data (){
                return {
                    user: '',
                    content: ''
                }
            },
            template: '#tmp1',
            methods: {
                postComment(){// 发表评论的方法
                    var comment = { id: Date.now(),user: this.user,content: this.content}
                    // 从localStorage中获取之前所有的评论
                    var list = JSON.parse(localStorage.getItem('cmts') || '[]') 
                    list.unshift(comment)
                    // 重新保存最新的评论数据
                    localStorage.setItem('cmts',JSON.stringify(list))
                    this.user = this.content = ''

                    this.$emit('func')
                }
            }
        }
        var vm = new Vue({
            el: "#app",
            data: {
                list: [
                    { id: Date.now(),user: '李白',content: '天生我才必有用'},
                    { id: Date.now(),user: '江小白',content: '呵呵呵呵呵'},
                    { id: Date.now(),user: '小马',content: '我姓马，风吹草地见牛羊的马'}
                ]
            },
            created(){
                this.loadComments()
            },
            methods: {
                loadComments(){//从本地的localStorage中，加载评论列表
                    var list = JSON.parse(localStorage.getItem('cmts') || '[]') 
                    this.list = list;
                }
            },
            components: {
                'cmt-box': commentBox
            },
        });
    </script>
</body>
</html>